Two-piece, very strong and sturdy extranal spool holder. Great for flexible or abrasive fillaments that cannot be used with the AMS units.

Rotate 45°, twist and lock. Integrated locking mechanism

It's best to print with PETG for the least friction between the spool and the spool holder. But PLA also works fine. Optional soft feet that provide more grip, print in TPU/TPC or any other flexibel material and glue in place in the dedicated slots on the bottom. Can be used without these feet.